I have an almost new PC running Win7 Home Premium. On each successful login I get a UAC popup asking for permission to "modify content on the disk" on behalf of the Windows Control Center. Any clue on how I can diagnose what's the problem and hopefully fix it?
The UAC popup comes from the Alienware software that is automatically started to manage the Alienware specific features of the PC. If you update the Alienware software to the most current version the UAC warnings should go away.
To do this, the update check integrated in the Alienware Command Center didn't work for me - it insisted that the software was already at the most current version. I had to download the new version manually from the Dell support site. First you have to find your PC model under "Support for home users" -> "Drivers and downloads", then you can download software in the "Application" section. The download is called "Dell-Application" and contains the current version of the Command Center utilities.
Check the event log for anything from the Windows Control Center, to try to see what it's doing.
Download Autoruns.exe from Sysinternals and run it, then clear any checkbox from Windows Control Center. (I'm not sure what that is, by the way. Windows Control Center I mean. That's not good.)